add workaround for check-mode of zfs module

1 files changed, 34 insertions, 0 deletions

diff --git a/filter_plugins/zfs.py b/filter_plugins/zfs.py
new file mode 100644
index 00000000..ebdb4dc5
--- /dev/null
+++ b/filter_plugins/zfs.py
@@ -0,0 +1,34 @@
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+from functools import partial
+
+from ansible import errors
+from ansible.module_utils.common.text import formatters
+
+
+def dehumanize_zfs_properties(data):
+    ''' zfs module sometimes wrongly indicates changed=true in check mode if sizes use human-readable format '''
+    try:
+        from jinja2.runtime import Undefined
+
+        if isinstance(data, Undefined):
+            return data
+
+        for prop, value in data.items():
+            if prop in ['quota', 'refquota', 'reservation', 'refreservation', 'recordsize', 'volsize']:
+                data[prop] = str(formatters.human_to_bytes(value))
+        return data
+    except Exception as e:
+        raise errors.AnsibleFilterError("dehumanize_zfs_properties(): %s" % str(e))
+
+
+class FilterModule(object):
+
+    ''' zfs filters '''
+    filter_map = {
+        'dehumanize_zfs_properties': dehumanize_zfs_properties,
+    }
+
+    def filters(self):
+        return self.filter_map